hows my comopression test result?
- Thread starter RGM1800
- Start date
Warm car and open throttle?
Seems grand though
not that warm. we did a compression test 2-3 hrs after driving so no that warm. not open throtlle too. we just clicked it until the reading goes up
Sheldon
Malta Area Rep.
try
normal operating temps engine
wide open throotle
efi fuse removed or injectors plug taken off so no fuel goes in. also king lead..
we unlugged the efi fuse and taken all the spark plugs out. so the test was inaccurate? going to normal operating temp and wot will increase my results?
Texx
Super Moderator
The piston rings will create a better seal when the engine is at normal operating temperature, so a warm engine may see you some different compression readings.
The main thing is to be consistent in the way you check each cylinder, it's the difference between the readings of each cylinder that is of more importance rather than the readings themselves. For example 160 psi on all 4 cylinders would be fine or likewise 140 psi across all 4 cylinders would be still OK, but if you had 3 cylinders at 160 psi and one cylinder reading 140 psi you've got a problem.
The main thing is to be consistent in the way you check each cylinder, it's the difference between the readings of each cylinder that is of more importance rather than the readings themselves. For example 160 psi on all 4 cylinders would be fine or likewise 140 psi across all 4 cylinders would be still OK, but if you had 3 cylinders at 160 psi and one cylinder reading 140 psi you've got a problem.
thanks texx. better seal better compression? will try to do it again soon. each cylinder is consistent by giving same readings